PMID- 12967485 OWN - NLM STAT- MEDLINE DCOM- 20031105 LR - 20240404 IS - 1080-6040 (Print) IS - 1080-6059 (Electronic) IS - 1080-6040 (Linking) VI - 9 IP - 8 DP - 2003 Aug TI - Porcine reproductive and respiratory syndrome virus: origin hypothesis. PG - 903-8 AB - Porcine reproductive and respiratory syndrome is a serious swine disease that appeared suddenly in the midwestern United States and central Europe approximately 14 years ago; the disease has now spread worldwide. In North America and Europe, the syndrome is caused by two genotypes of porcine reproductive and respiratory syndrome virus (PRRSV), an arterivirus whose genomes diverge by approximately 40%. My hypothesis, which explains the origin and evolution of the two distinct PRRSV genotypes, is that a mutant of a closely related arterivirus of mice (lactate dehydrogenase-elevating virus) infected wild boars in central Europe. These wild boars functioned as intermediate hosts and spread the virus to North Carolina in imported, infected European wild boars in 1912; the virus then evolved independently on the two continents in the prevalent wild hog populations for approximately 70 years until independently entering the domestic pig population. FAU - Plagemann, Peter G W AU - Plagemann PG AD - University of Minnesota, Minneapolis, Minnesota 55455, USA. plage001@umn.edu LA - eng PT - Journal Article PT - Review PL - United States TA - Emerg Infect Dis JT - Emerging infectious diseases JID - 9508155 SB - IM MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Genotype MH - Lactate dehydrogenase-elevating virus/*genetics MH - Porcine Reproductive and Respiratory Syndrome/epidemiology/*transmission MH - Porcine respiratory and reproductive syndrome virus/*genetics MH - Prevalence MH - Swine PMC - PMC3020618 EDAT- 2003/09/12 05:00 MHDA- 2003/11/06 05:00 PMCR- 2003/08/01 CRDT- 2003/09/12 05:00 PHST- 2003/09/12 05:00 [pubmed] PHST- 2003/11/06 05:00 [medline] PHST- 2003/09/12 05:00 [entrez] PHST- 2003/08/01 00:00 [pmc-release] AID - 03-0232 [pii] AID - 10.3201/eid0908.030232 [doi] PST - ppublish SO - Emerg Infect Dis. 2003 Aug;9(8):903-8. doi: 10.3201/eid0908.030232.